TWI337915B - Backingless abrasive article - Google Patents

Description

Nine, the invention description: [Technical field to which the invention pertains] The ribs of the invention are related to the abrasive articles of the non-back layer components. [Prior Art] Aboriginal abrasive articles and abrasive articles bonded to abrasive articles are used in various industries for processing workpieces, such as by grinding, grinding or polishing. Shou J uses abrasive articles to process a wide range of industries from general trimming and material removal industry applications to the optical industry and automotive refinishing industry to metal manufacturing. V ° In each of these examples, 'manufacturing promotes the use of grinding The agent removes the bulk material or affects the surface properties of the product. Surface properties include gloss, texture and uniformity. In particular, surface characteristics such as roughness and gloss can affect the performance of optical media. Optical media is increasingly being used for data storage, especially for games, movies, and digital entertainment. Surface scratches or poor surface quality can introduce errors in optical media access and, in many cases, can cause optical media to be unreadable or unplayable. Especially in the case where optical media are frequently reused or resold, surface repair is required. Surface properties can also affect the quality of automotive touch up paint. For example, when painting a surface, the paint is typically sprayed onto the surface and cured. The resulting painted surface has a linen-like orange peel texture or includes a dusty defect. Typically, the painted surface is first sanded with a coarse abrasive and then sanded with a fine grain engineering abrasive and buffed with a wool pad or foam pad. In addition to surface characteristics, industries such as optical media leasing and resale or automotive paint industries are cost sensitive. Factors affecting operating costs include the speed of processing 2 122813.doc 1337915 and the cost of materials used to treat the surface. Often, the industry seeks cost effective materials with higher material removal rates. However, abrasives exhibiting higher removal rates often exhibit poor performance in achieving the desired surface characteristics. In contrast, abrasive #, which produces the desired surface characteristics, has a lower material removal rate. For this reason, surface treatment is often a multi-step process using a variety of grade f abrasive plates. Typically, fine abrasives are used in subsequent steps to repair surface imperfections introduced by single-step operations. Thus, the introduction of 'fine scratches and surface plague abrasives leads to increased labor in subsequent steps. Any increase in labor in the pass-through step #increased cost increase. For example. Labor ~ plus includes an increase in the time for improving the surface quality and an increase in the number of abrasive products used during the step. The increase in time and the increase in the number of abrasive products used in the steps lead to increased costs, which leads to disadvantages in the market. CD, DVD and game resale stores and rental providers are better able to perform single-step surface repair of optical media prior to subsequent rental or sales. Therefore, it is necessary to obtain high removal rates and high quality surface characteristics from the use of early-grinding products. Poor quality surface characteristics can reduce the success rate of surface repair, and therefore or (4) the loss of revenue and the cost of re-μ (4) with __. On the other hand, low removal rates result in low throughput and low efficiency. Therefore, it is desirable to have a cost-effective engineered abrasive article that provides improved surface characteristics when in use. SUMMARY OF THE INVENTION In a particular embodiment, the abrasive article comprises a polishing I22813.doc abrasive article having an array of protrusions without a backing. The abrasive layer has a thickness layer of no greater than about 100 mils. In another exemplary embodiment, the abrasive article includes an abrasive layer having a first major surface and a second major surface. The first major surface defines a plurality of projections extending from the first surface of the abrasive article. The abrasive article includes an adhesive layer that is in direct contact with the second major surface. The adhesive layer defines a second surface of the abrasive article. In another exemplary embodiment, an abrasive article includes an abrasive layer having a first major surface and a second major surface. The first major surface defines a set of protrusions. The abrasive article also includes an adhesive layer that is in direct contact with the second major surface and includes a fastener layer that is in direct contact with the adhesive layer. In a particular embodiment, the abrasive article is formed from a cured formulation. The formulation includes a liquid polyoxyxene rubber, cerium oxide reinforced particles, and a granule. In another exemplary embodiment, a method includes blending a liquid polyoxyxene rubber, cerium oxide enhancing particles, and abrasive particles to form a formulation. The method further includes forming a surface feature layer from the formulation and curing the formulation. In another exemplary embodiment, the abrasive article comprises a layer comprising a polyoxynoxy binder and abrasive particles. The layer has an elongation of at least about 50%. In another exemplary embodiment, the abrasive article comprises a surface feature layer configured to increase surface area with wear. The surface feature layer comprises a polyoxynoxy binder and abrasive particles. The surface feature layer has a thickness of no greater than about 500 mils. The abrasive article has no backing. In another exemplary embodiment, the abrasive article comprises a layer having surface protrusions. This layer includes a polysulfide oxygen spotting agent and a grinding philosopher. The abrasive article has a gloss performance of at least 122,813.doc 1337915 of about 20. In an additional embodiment, a method of conditioning a painted surface includes abrading a painted surface with an abrasive article formed from a cured formulation. The formulation includes liquid polyoxyxene rubber, cerium oxide reinforced particles, and abrasive particles. The method further includes polishing the ground painted surface. In another exemplary embodiment, a method of trimming a painted surface includes abrading a painted surface with an abrasive article, the abrasive article comprising a surface feature layer configured to increase in surface area with wear. This layer comprises a polyoxynoxy binder and abrasive particles. The abrasive article has no backing. The method further includes polishing the textured surface of the grind. [Embodiment]

In a particular embodiment, the abrasive article is formed from a grinding formulation that forms a surface feature layer. In the embodiment, the article has no backing layer (i.e., an unstructured backing layer) so that the article is self-supporting. In particular, the formulation forming the surface feature layer is self-supporting such that the layer is durable without structural degradation before the abrasive properties are exhausted. In the examples, the formulations include polyoxin, fine reinforcing particles, and abrasive particles. In a specific example, the polyoxyxene resin is formed from a liquid polyoxyxene rubber, which typically includes fine reinforcing particles such as cerium oxide. The surface feature layer includes a combination of surface protrusions. The combination of surface protrusions can be random and form a pattern in one embodiment. In addition, the cross-sectional surface area may change during wear of the article (typically = surface protrusions of the sidewalls (pyramids, rounds, prisms, etc.) protrusions = or may be substantially constant during wear such as protrusions perpendicular to the sidewalls ( In the case of an exemplary embodiment, the abrasive article may also include an adhesive layer. In another example, the implementation of the invention may be carried out in the case of a large-scale (rectangular square, rod-shaped, etc.) 1228I3.doc 1337915. - The method of grinding an object comprises a heart-filled liquid polyoxymethylene rubber and abrasive particles to form a formulation. The liquid polyoxo rubber usually comprises a cerium oxide reinforced particle. The use of the formulation layer, such as The surface feature layer of the surface protrusion combination is described. In addition, the method comprises curing the formulation to form a surface feature layer. Alternatively, the abrasive article can be formed using a thermoplastic or other thermoset polymer. In an exemplary embodiment, the abrasive article comprises a surface feature layer formed from a polymer formulation and abrasive particles. The polymer formulation can be a thermoplastic formulation. The formulation may be a curable formulation. In another example, the polymer formulation may be a combination of a curable formulation and a thermoplastic formulation, such as a thermoplastic vulcanizate. In a particular example, the thermoplastic formulation is a thermoplastic elastomer. In another example, the polymer formulation can include a component having a glass transition temperature of no greater than about 25° C. For example, the polymer formulation can be a blend of a plurality of polymers, wherein the polymer A glass transition temperature having a temperature of no greater than about 25 ° C, or the polymer formulation can be a block copolymer wherein the block component is characterized by individual polymer units having a glass transition temperature of no greater than about 25. In other words, the polymer formulation can include a low glass transition temperature component in an amount of no greater than about 10 wt%, such as no greater than about 5 wt% or even no greater than about 3 wt%. Exemplary polymer formulations include Polyamine-polyether copolymer; polyester-poly-copolymer; acrylic resin, acrylic copolymer, or modified acrylic copolymer such as ethylene-methacrylate copolymer, ethylene-ruthenium Acrylate-maleic anhydride copolymer, polybutyl methacrylate or 122813.doc 1Λ 1337915 methyl methacrylate-butyl methacrylate copolymer; ethylene-vinyl acetate copolymer; ethylene-vinyl acetate Ester-maleic anhydride copolymer; diene elastomer; thermoplastic polyamino phthalate; blend of polylactic acid and polycaprolactone polyoxyalkylene copolymer; polyoxyl resin; or any blend thereof An exemplified polyamine-polyether is commercially available from Arkema under the trade name Pebax, such as Pebax 2533. Exemplary acrylic polymers (including copolymers and modified copolymers) can be traded under the trade name 〇revac , Lotryi and L〇ta (Jer purchased from Arkema or purchased from Lucke under the trade name EWac丨te. Exemplary polyester-polyether copolymers are commercially available from Tic〇na under the trade name Riteflex. Exemplary thermoplastic polyurethanes are commercially available from BASF under the tradename Elast®. Examples of non-diene elastomers include copolymers of ethylene, propylene and diene monomers (EPDM). Examples of non-diene monomers include conjugated dienes such as butadiene, isoprene, and gas butadiene. Or an analogue thereof; a non-conjugated diene comprising from 5 to about 25 carbon atoms such as anthracene, 4-pentadiene, M-hexadiene, 1,5-hexane dibasic, 2,5-dimethyl -1,5-hexadiene, M octane or the like; a ring-like olefin, such as % pentadiene, cyclohexadiene, cyclooctadiene, dicyclopentadiene or the like; Vinyl cyclic alkene, such as fluorenyl vinyl 丨 环 _ cyclopentene, vinyl-i-cyclohexene or the like; alkyl bicyclo decadiene, such as 3-methyl double bad - (4, 2, 1) - indole-3,7-diene or an analogue thereof; anthracene, such as a fluorenyl group 1 or an analog thereof; a thin base of borneol, such as 5 ethylene-2-norborn: »#, 5- Butylene-2-norborner, 2_deuterated propyl 5-norbornene, 2_isopropenyl-5-norbornene, 5 (a hexadienylnorbornene, 5_(3,7 xin) - dilute)-2-norbornene or an analogue thereof; tricyclic di-salt, such as 3-mercaptotricyclo (5,2,1,2,6), bismuth or Shu analogs, or any 122S13.doc

• 1U 1337915 combination. In a particular embodiment, the diene comprises a non-co-light dilute. In another embodiment, the dilute elastomer comprises an alkenyl norborner. The dilute elastomer may comprise, for example, from about 63% to about 95% 〇/〇 of the polymer, from about 5 wt% to about 37 propylene and about 〇 based on the total weight of the diene elastomer. 2 (d) to about 15 bis of dilute monomer. In the example of the material, the ethylene content is about 70 wt% to about 90 wt% of the dilute elastomer, and the propylene content is about the center of the dilute elastomer (9) to (4)-' and the dilute monomer content is dilute. The elastomer is from about 2 Wt% to about 10 wt%. Exemplary dilute elastomers can be traded under the trade name Norde! from Dow, such as Ν〇_Ip 4725}> or - (iv) 482〇. In a particular embodiment, the polymer formulation comprises polysorbate. For example, the polyoxo resin may be formed of a high viscosity polysulfide rubber (hcr) or a liquid polyoxo rubber (LSR) and may include a fumed dioxy-cut reinforcing filler. In a particular example the m resin is formed from an LSR. In general, polysulfide rubber, LSR or HCR crosslinks to form a polyoxin, which forms a matrix in which the abrasive particles can be distributed or dispersed. The crosslinked polyoxo resin acts as a point of abrasive particles and is in contrast to uncrosslinked polyoxymethylene configured to migrate to the surface of the abrasive article. The polyoxynium sulphate can also be formed from polysulfuric acid oil. The usually obtained polychlorite: from the absence of fuming cerium oxide. In this case, 1-polyoxygenated oil (parts A and II, reinforcing particles (such as fuming oxidized abrasive particles are now solidified to form a polyoxynoxy resin.: Illustrative polysulfuric acid or polylithic eve The oxy-rubber comprises a diarrhea::main chain to which a functional group may be attached. In the example, the 'functional group' may include a non-reactive functional group, such as a dentate group, a phenyl group or a burnt group, or any combination thereof. The fluoro functional group of 122813.doc is further exemplified to a methyl group, an ethyl group or a propyl group or a trans group which may be included to enhance crosslinking, and includes a hydrogen anion group. Polyalkyl siloxane or any group thereof § energy group. Formed in a specific oxy-fired and parent-linked agent. In a specific example, cross-linking includes reactive hydrogen anion functional words 'fluorine polymerization# Oxygen can include attachment to the primary bond embodiment. The 'oxyxane backbone can be attached to any combination of n-burning backbone functional groups. Exemplary reactive functional groups, vinyl groups, or any combination thereof. Examples include polyfluorinated fluorenes. Oxyalkane, polyphenyloxane, which has a counterexample such as a terminal vinyl group In the example of the polymetallic compound, the crosslinking agent may be an organic crosslinking agent, which is a polyfluorene-based crosslinking agent, and the base 0 surface characteristic layer may be formed by an uncured formulation. , the formulation may include

Liquid polysulfide rubber (LSR). For example, t, # using test method DIN 5: 〇 19 When measured at a shear rate of 10 s-i, the uncured liquid polyoxyxene rubber may have a viscosity of no more than 600,000 cps. For example, the viscosity may be no greater than 450, just cps, such as no greater than cps. By t, the viscosity is at least about 50,000 cps, such as at least about 1 〇〇, 〇〇〇 cps. In another example, the non-reinforced particulate polyoxyxene oil may have a viscosity of from about 5 cps to about 165,000 cps °. In the case of a cured formulation, the polymer formulation can be cured prior to curing with the abrasive particles and optionally Enhanced particle blending. Further, various curing agents, catalysts, thermal initiators or photoinitiators and sensitizers may be added. In an exemplary embodiment, the polyoxyxene rubber is blended with the abrasive particles to provide a formulation which is then cured after Ik. In one example, a peroxide catalyst can be used to cure the modulating 122813.doc 1337915 formulation. In another example, the formulation can be cured using a platinum catalyst. In a particular embodiment, the polyoxyn oxide comprises a two-part liquid polyoxyethylene rubber (LSR) catalyzed by platinum. The first portion comprises a vinyl terminal or a grafted polyalkyl siloxane and the second portion comprises a crosslinking agent. . In a specific example, the first portion includes a catalyst and an inhibitor. In an additional example, the cross-linking agent can include a rhodium-based cross-linking agent having a decane backbone linked to a reactive functional group such as a hydride or a hydroxyl group. In general, the polymer formulation is blended with the abrasive particles or reinforcing particles prior to forming the abrasive article. When a thermoplastic polymer formulation is used, the abrasive particles or reinforcing particles can be blended with the molten polymer formulation. When the composition formulation is a cured formulation, the abrasive particles or reinforcing particles can be blended with the uncured component of the polymer e-weekly formulation. Thus, when cooled or cured, the polymer formulation, abrasive particles, and optional reinforcing particles can form a composite wherein the abrasive particles and optional reinforcing particles are distributed or dispersed throughout the polymeric matrix. ° • In an exemplary embodiment, the polyoxygenated oil is blended with the ceria reinforcing filler and abrasive particles to form a formulation which is subsequently cured. In the <RTIgt; </RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The first portion includes a vinyl terminal or grafted polysulfide and the second portion includes a crosslinking agent such as a polyhydroxyalkyl siloxane. The polymer matrix formed from the polymer formulation can exhibit the desired properties such that the abrasive layer formed from the polymer formulation can be self-forming to form a backless article. In particular, the polymer blends the core with an abrasive layer that is used without structural degradation before the abrasive properties are exhausted. I22813.doc 14 1337915 For example, a polymer matrix without abrasive particles can exhibit an ideal elongation at break, tensile strength or tensile modulus. In the case of ( _ “ “ “ “ “ “ “ “ “ “ 聚合物 聚合物 聚合物 聚合物 聚合物 聚合物 聚合物 聚合物 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨 研磨An elongation at break of at least about 35%, at least about 450%, or even at least about %. In particular, the non-abrasive granules having a silica dioxide reinforcing filler may have a DIN 53 504 S1. The elongation at break is determined to be at least about 35%, such as at least about 4 or even at least about 500. In another example, the non-abrasive-cure polyclay may have a pull of at least about 1 MPa. In the exemplary embodiment, the surface feature layer 2 forming the abrasive article may comprise reinforcing particles. For example, the reinforcing particles may be incorporated into the polyoxyxene rubber. Alternatively, the reinforcing particles may be prepared. While the formulation is added to the polyoxyxide oil just prior to the addition of the abrasive particles. Exemplary reinforcing particles include dioxo particles, oxygen particles, or any combination thereof. In a particular example, the reinforcing particles include, for example, fumes.二 二 二 9 The erbium dioxide particles are commercially available from Degussa under the trade name Aerosil (such as Aerosil R812S) or from Cab 〇tc 〇rp〇rati〇n (such as sil smear - oxidized sulphur). In another exemplary embodiment The reinforced cerium oxide can be incorporated into a liquid polyoxyxene rubber formulation such as the E ast〇sil 3〇〇3 formulation available from Wacker SinCones. Typically, the reinforcing particles are dispersed in the polymer. Within the matrix and usually monodisperse to be substantially free of coalescence. In another exemplary embodiment, the labile particles formed by the solution based method, such as sol formation and sol-gel formed ceramics, are particularly suitable for use in 122813. Doc -15- 1337915. Suitable sols are commercially available. For example, 'colloidal silica in an aqueous solution can be such as "LUD〇x&quot; (EI Dup〇nt &amp; and Co., Inc. Wilmington, Del.) &gt;&quot;NYACOL'· (Nyacol Co.,

As.nd, Ma,) or &quot;NALc〇,, (Nale. Heart 31 c., (10) - 呔 I丨1.) The trade name is purchased. Many commercially available sols are basic and can be stabilized by an alkali metal such as sodium hydroxide, hydroxide or hydrogen hydroxide. An additional example of a suitable colloidal cerium oxide is described in U.S. Patent No. 5,126,394, incorporated herein by reference. Particularly suitable are cerium oxide formed by sol and alumina formed by sol. The sol can be functionalized by reacting one or more suitable surface treatment agents with the inorganic oxide matrix particles in the sol. In a particular embodiment, the reinforcing particles have a submicron size. The reinforcing particles may have a surface area in the range of from about 50 m2/g to about 500^/§, such as in the range of from about 10, m / g to , 'spoon 400 m / g. The reinforcing particles may be nanometer sized particles such as particles having an average particle size of from about 3 nm to about 5 Å. In an exemplary embodiment, the reinforcing particles have from about 3 (10) to about 2 Å, such as from about 3 nm to about 1 〇〇 nm, from about 3 nm to about 5 Å, from about 8 nm to about 30 nm, or from about nm to about Average particle size of 25 nm. In a particular embodiment, the average particle size is no greater than about 5 Å, such as not a_2qq (10) or no greater than about 15 〇 nm. For reinforcing particles, the average particle size can be defined as the particle size corresponding to the peak volume fraction in the small angle neutron scattering (read 5) distribution curve or the particle size corresponding to the cumulative volume fraction of 0.5 of the SANS distribution curve. The reinforcing particles can also be characterized by a narrow distribution curve which is not more than half the average particle size of about 2 〇. For example, the half width may be no more than about ^ or not I22813.doc 16 15 : about 1 〇. The half width of the distribution is the width of the distribution curve at half the maximum height (such as the half of the particle fraction at the peak of the distribution curve). In a particular &amp; order, the particle size distribution curve is unimodal. In an alternative embodiment, the particle size distribution is bimodal or has more than one peak in the particle size distribution. έ: One: In the example, the reinforcing particles are included in the formulation by a combination of polyoxymethylene, reinforcing particles and abrasive particles. For example, the reinforcing particles include the total weight of the formulation of the reinforcing particles, the polyoxyl resin, and the abrasive particles. Ten may be included in the formulation in an amount of at least about 3 wt%. In particular, the formulation may comprise at least about 5 - reinforcing particles, such as at least about 10% by weight of the sturdy particles' or even at least about 3% by weight of reinforcing particles. Additionally, the formulation may include no more than about 6% by weight of reinforcing particles, such as no more than about % by weight of reinforcing particles. The formulation can include, in addition, abrasive particles. The abrasive particles may be formed of any one or a combination of the abrasive particles including the following: % oxidation, oxidation (smelting or sintering), oxidation, oxidation, oxidation, carbonization, stone weight Diamond, cubic boron nitride, nitrogen cut, dioxane (tetra), titanium dioxide, titanium dioxide, boron carbide, tin oxide, tungsten carbide, carbon carbide, iron oxide, chromium oxide, vermiculite, silicon carbide or any combination thereof. For example, the abrasive particles can be selected from the group consisting of: sulphur dioxide, oxidized, oxidized, carbonized stone, nitriding, nitriding, stone, diamond, diamond, oxidation Wrong, dioxide oxidized, two sputum, carbonized, chert, gold: sand = Shao or its compound. In particular, the abrasive particles may be selected from the group consisting of nitrides, oxides, carbides, or any combination thereof. In an example J22813.doc 1337915, the nitride may be selected from cubic boron nitride to &lt;#. 4 s „ Tantalum nitride or any combination thereof f In another example, the oxide group: _I j, one of the following components: ruthenium oxide, aluminum oxide, oxidization error, JL·t±: gasification t / Oxidation, dioxane, sulphur, titanium oxide, tin oxide, iron oxide, in. y - emulsified road or any group of σ In another example, the carbide is optional έ i. , boron carbide, tungsten carbide, annihilated titanium or any combination thereof. Sand. - Groups of strontium, and especially carbonized sinter applications. The use of dense abrasive particles mainly containing α• gas servant such as oxidized. In another special case, the abrasive particles include tantalum carbide. The abrasive particles may also have a specific shape. The consistent example of the shape includes a rod shape, a quadrangular shape, a pyramid, a cone, a solid ball 'work' ball or Similar shape. Or - the abrasive particles can have any shape. The abrasive particles usually have a micro-half of not more than 2 inches, and 4 micro-waters such as no more than about 1500 micrometers.

The average grain diameter of rice is g Φ- U\ rU umbrella. In another example, the particle size of the abrasive grains is not more than 750 μm 4 , such as not more than about 350 μm. For example, the abrasive particles may have a particle size of at least 0.1 micrometers, such as from about 1 micrometer to about 15 micrometers, and more typically from about micrometers to about 200 micrometers or from about 1 micrometer to about (10) micrometers. The particle size of the abrasive particles is usually specified as the longest dimension of the abrasive particles. There is generally a range of uncle distributions. In some cases the particle size distribution is strictly controlled. In one exemplary formulation, the abrasive particles comprise from about 10% to about 90% by weight of the formulation, such as from about 30% to about 8%. In an exemplary embodiment, the formulation comprises at least about 5% of the abrasive particles of the total weight of the formulation. By way of example, the formulation may include at least about 45 wt% abrasive particles, such as at least about 55. abrasive particles. In general, the formulation includes no more than % ritual. The abrasive particles, such as abrasive grains of no more than 85 wt%. 1228l3.doc, in turn, forms a surface feature layer from a formulation comprising a polymer formulation, abrasive particles, and optionally reinforcing particles. Forming the post-layer formulation exhibits mechanical properties that advantageously enhance the effectiveness of the abrasive article formed by the formulation. In particular, the formulation exhibits desirable mechanical properties such as elongation at break, hardness, tensile modulus or panel strength. In addition, the effectiveness of the abrasive article in producing the desired surface characteristics in the milled product can be evaluated. In an exemplary embodiment, the formulation exhibits, for example, an elongation at break of at least about 5% as measured using test method ASTMD 412 or test method DIN 53 504 S1. In particular, the elongation at break may be at least about 1%%, such as at least about 25%, or even at least about 135%. The curing formulation may also have a desired hardness, such as based on test method DIN 53 505. 50 Shore Α to a hardness in the range of about 75 Shore D. For example, the hardness may be no greater than about 75 Shore D, such as no greater than 6 〇 Shore d or no greater than 50 Shore D. In another non-limiting embodiment, the formulation exhibits an ideal tensile modulus of no greater than about 8 MPa at loo% strain based on ASTM D 4]2. For example, the tensile modulus can be no greater than about 7.6 MPa, such as no greater than about 75 MPa. Additionally, the cure formulation can have an ideal tensile strength of at least about 7.0 MPa based on ASTM D4112. For example, the cure formulation can have a tensile strength of at least about 7.5 MPa, such as at least about 8. MPa. Alternatively, the formulation may exhibit a tensile modulus of at least about 8 MPa, such as at least about 14 MPa or even at least about 30 MPa. Specific formulations can exhibit tensile modulus greater than i 〇〇 MPa. The mechanical properties of the formulation can aid in the effectiveness of the abrasive article, such as the benefit 122813.doc 1337915, to promote surface properties that can be imparted by the abrasive particles formed from the formulation. "In terms of column, the mechanical properties of the curing formulation can contribute to surface performance characteristics such as gloss performance or coarse roundness performance as defined below. Additionally: the abrasive article can exhibit removal as defined below by 4 I removed the ideal material removal rate for the number of measurements.

In an exemplary embodiment, the formulation can form a surface feature layer of the abrasive article. Figure 1 includes an illustration of an exemplary structured abrasive article. Or the H formulation can be used to form other unstructured coated abrasive articles or bonded abrasive articles. Typically, the structured coated abrasive article comprises a coated abrasive article having a combination of protruding surface features that are generally arranged in a pattern.

A structured abrasive article, also known as an engineered abrasive article, contains a plurality of abrasive particles dispersed in a binder and forming discrete three-dimensional elements in or on the abrasive article in a pattern or random arrangement. Structural abrasive articles typically have a relatively high material removal rate as well as fine surface finish and long service life. These items are designed to be Grindable # to continuously expose the new abrasive to the grinding interface. However, most structured abrasive articles are designed for strong applications. Therefore, when used in a weak force application, the resin binder is not worn out or worn to expose new abrasive particles. The exemplary structured abrasive article 说明 illustrated in FIG. 1 includes an abrasive layer 102. The abrasive layer 102 includes a protruding structure 1〇8 that can be arranged in a file. In the illustrated embodiment, the protruding structure 1 〇 8 is configured to provide increased contact area in response to wear, such as where the protrusion has a sloping side surface. By way of example, a, structure 108 may have a cross-face that decreases as the distance from the bottom of polishing layer i 〇 2 increases. Typically, the abrasive layer 1〇2 is formed from a formulation comprising a polymer formulation I22813.doc -20. 1337915, reinforcing particles and abrasive particles. For example, the formulation can be formed into a patterned layer and cured or hardened to produce an abrasive layer having a structure of 1 〇8. In an exemplary embodiment, an abrasive layer 102 having a backing layer or a support layer can be formed. The backing layer is typically bonded directly to the abrasive layer 1〇2 and directly in contact with the abrasive layer 102. For example, the abrasive layer 102 can be extruded or calendered onto the backing layer. The backing layer or support layer may comprise a polymeric film, a polymeric foam or a fibrous web. In a particular example, the backing layer or support layer can comprise a cloth, paper or ’ a 6 hanged back layer or a push layer is a non-abrasive layer that does not include abrasive particles. The backing or support layer generally provides structural support or imparts mechanical properties to the abrasive article that enhance the effectiveness of the abrasive layer 102. Alternatively, the abrasive article 100 can be unbacked, and the particular formulation used to form the abrasive layer 1〇2 provides desirable mechanical properties and can be self-supporting. That is, the abrasive layer 102 can be configured to be independent of the backing layer during use or during manufacture. For example, the self-supporting abrasive layer 102 can be used without structural degradation before the abrasive properties are exhausted. In particular, the properties of the polymer in the formulation allow for the formation of a backless abrasive article 100' which may have advantages over the general need to use a backing layer to carry the abrasive layer during one coating process and provide machinery during use. The specific advantages of the current state of the art for integrity or flexibility. In particular, the abrasive layer 102 can be self-supporting without the presence of an underlying floor or backing layer. The underlying support layer or back layer of 5 hai has traditionally been superior to the conventional grinding sound: stretching characteristics (combination of strength and flexibility). In this particular embodiment t: layer. The article 100 does not contain tensile properties superior to the tensile properties of the abrasive layer 102. 122813.doc 1337915 In addition to the abrasive layer 102, the abrasive article 1 can include an adhesive layer. For example, the adhesive layer 4 can include a positively sensitive adhesive or a curing point. When the (4) adhesive is used to bond the abrasive article to the abrasive tool, the abrasive layer may be covered with a barrier film to prevent adhesion in advance. The barrier films are typically removed just prior to attachment of the abrasive article Η)0 to the abrasive tool. In a particular embodiment illustrated in Figure 7, the adhesive layer 7A can form a lower surface, such as a viscous bonding surface, and the abrasive layer 7 〇 2 having surface features 7 可 8 can form an abrasive upper surface. . In particular, the adhesive layer 7〇4 is in direct contact with the abrasive layer 7〇2, such as without an intervening structural layer. In another exemplary embodiment, the adhesive layer 1〇4 can be bonded to the fastener plate 〇6. In particular, the fastener plates 1〇6 can be used to couple the abrasive product to the grinder. In one example, the fastener plates 1〇6 are not configured to provide structural support to the abrasive article. For example, the fastener panel i 〇 6 can have a tensile strength less than that of the abrasive layer 102. In the example, the fastener panel 1 〇 6 can be one of the components of the hook and loop fastening system. The fastening system can be used to couple the abrasive article 1〇〇 to the abrasive tool. The structures 108 of the abrasive article 100 can be arranged in a pattern. For example, Figures 2 and 3 include illustrations of exemplary patterns of abrasive structures. In an exemplary embodiment, FIG. 2 illustrates a pattern 200 of abrasive structures 2〇4 incorporated into the polishing layer 202. For example, the abrasive structures 204 are arranged in a grid pattern. In another exemplary embodiment, 'Fig. 3' includes an illustration of a pattern 3〇〇 in which a prismatic abrasive structure 304 is incorporated into the abrasive layer 3〇2. As illustrated, the prismatic structures 306 are arranged in parallel lines. Alternatively, the structures may be randomly arranged without a defined pattern&apos; or the elements may be offset from one another in alternating columns or rows. In an additional example 122813.doc • 11· 1337915, the structure 108 can be a discrete protrusion having sloping sidewalls. In another example, structure 108 can be a discrete protrusion having substantially vertical sidewalls. The structures 108 may be arranged in an array having a pattern or may be arranged in a random array. In an embodiment, the abrasive structure protruding from the abrasive layer is configured to increase the contact area in response to wear. For example, Figures 4 and 5 include illustrations of exemplary cross sections of the abrasive structure. Figure 4 includes a grinding structure 400 having a triangular cross-section. In the case of the first degree of wear, the contact area indicated by the width 4 〇 2 is smaller than the contact area obtained by the additional wear, such as the contact area 404. The contact area generally formed in the horizontal plane indicated by 408 generally increases as the vertical height indicated by 406 decreases. In another exemplary embodiment, the structure can have a semi-circular cross-section 500, wherein the contact surface 5〇4 is larger than the contact surface resulting from less wear, such as surface 5〇2. Although the vertical cross-sections illustrated in Figures 4 and 5 are of a regular shape, the structure or protrusion may have an irregular shape or a regular shape. If it has a regular shape, the protrusions may have a horizontal cross section such as a circle or a polygon. Returning to Figure 1 'the above formulation has been found to be particularly useful for forming a particular structured abrasive article, particularly a abrasive article that does not have a support or backing layer and that includes a thin structure. In an exemplary embodiment, the abrasive layer 〇 2 has a total height indicated by the letter B, which is no greater than about 500 mils, such as no greater than about 35 mils, no greater than about 200 mils, and no greater than about 1 〇〇 mil, no more than about 5 mils or even no more than about 35 mils. The abrasive structure 1 8 may be no greater than about 2 mils, such as no greater than about 15 mils. Additionally, the width of the abrasive layer 1〇2, represented by the letter C, excluding the abrasive structure 1〇8, may be no greater than about 15 mils, such as no greater than about 1 mil. 122813.doc -23- 1337915 In an exemplary embodiment, the abrasive article can be formed using a method as illustrated in FIG. For example, as illustrated by 6〇2, the poly-oxo-arsenic abrasive particles may be mixed. In a particular embodiment, a liquid polyoxygen (IV) comprising cerium oxide particles is mixed with the abrasive particles to form an uncured formulation =. In addition, the mixing may include mixing a portion of the liquid poly-stone I and the knives. Alternatively, mixing may include mixing the polyoxygenated oil, reinforcing particles, and abrasive particles in one of a variety of sequences to form a formulation.

The formulation can be used to form a patterned layer as illustrated by 604. By way of example, the patterned layer can include a surface structure pattern configured to provide an increased contact area in response to wear. For example, the cured formulation can be extruded or calendered into a sheet. The panel can be stamped, engraved or integrally patterned or any combination of these methods to provide a patterned surface structure. In another exemplary embodiment, the formulation can be extruded or calendered onto a negative surface comprising a negative pattern (where a negative surface is applied to form a pattern of patterned layers). As illustrated by 606, the formulation can be cured after the patterned layer is formed from the uncured formulation. In the case of platinum catalyzed polyoxo, the formulation and the patterned layer formed therefrom can be heated and thus thermally cured. In alternative embodiments, a catalyst system that reacts to actinic radiation can be used. Typical conditions for curing are 5 minutes at 350 °F. A similar method can be carried out using thermoplastic polymer formulations. For example, the thermoplastic polymer formulation can be blended with the abrasive particles and optional reinforcing particles. The blending can be carried out in an extruder or a heat blender. The blending formulation comprising the polymer formulation, the abrasive particles and the reinforcing particles can be extruded and patterned. For example, a surface pattern can be formed in the surface of the extruded layer of the 1228l3.doc -24-1337915 blending formulation using a print, roll or other patterning technique. In a particular example, the blending formulation can be extruded onto a negative patterned mold. The blending formulation can be cooled to form an abrasive layer. An adhesive or fastener layer can be added to form an abrasive product. Alternatively, this method can be modified for use with thermoplastic vulcanizates. While embodiments of abrasive articles can be used in a variety of industrial applications, certain embodiments of abrasive articles are advantageous for use in the surface of the optical media repair industry. For example, a pre-polished process can be used to grind a treated surface such as an optical media or painted surface. Pre-polished is typically performed using coarse abrasive articles and typically removes large surface defects leaving a matte finish. In an exemplary embodiment, the pre-polished surface is further ground using an abrasive article having a particle size smaller than that of the coarse abrasive article. For example, the pre-polished surface can be further ground using an abrasive article formed from the above formulation. The formulation may include a polymer formulation, a oxidizing agent reinforced particle, and an abrasive particle. • In another example, the pre-polished surface can be further ground using an abrasive article comprising a layer having a surface pattern configured to increase surface area with wear. This layer can include polymer formulations and abrasive particles. The abrasive article can be free of backing. After grinding, the ground surface can be polished or polished. For example, the ground surface can be polished or polished with a wool enamel or foam pad. Polished or polished surfaces typically have desirable roughness and gloss. In a particular embodiment, the abrasive article can be used to repair optical media such as cd or DVD. For example, a CD or DVD rental agency or resale 122813.doc -25-1337915 can receive used optical media. In an example, the institution can receive optical media via a store. In another example, the institution can receive the optical media via mail. The abrasive article formed by the above may be ground or DVC). In a special example, the abrasive article does not include a backing layer. In another example, the abrasive article can comprise a pressure sensitive adhesive surface. Can be cleaned and polished or dVD. After iW, a CD or DVD can be provided for subsequent use, such as re-leasing or selling. 3 sheep 5, these abrasive objects are suitable for use without subsequent coating process

The method, and grinding with the abrasive article, imparts stain resistance or dust resistance to the polished surface. Particular embodiments of the abrasive article advantageously provide improved surface characteristics when used. For example, the use of a particular embodiment of an abrasive article can exhibit an improvement in the roughness and gloss of the ground surface. For example, gloss performance can be defined as the average gloss of the surface treated with the abrasive article. The 2呎χ4呎 area on the newly painted metal surface can be first ground or pre-polished with a 3M 260L Pl500 from 3M. The pre-polished usually produces

The average coarse wheel (Ra) surface between 78 micro 吋 and 9 吋 measured by the Federal Perthometer M2. The pre-polished painted surface was sanded for 1 minute using the abrasive article to be tested. The average roughness and 6-degree gloss were measured (TriC〇r-system 2 MiCr〇 TH-G丨oss gloss meter). Gloss Efficacy ^ The average gloss of the polished article after the above procedure. The embodiment of the abrasive article can produce an amount of gloss or reflectance of 60°, such as at least about 26 or at least about 28_5, depending on the particle size of the abrasive particles. For example, J400 or more) can produce a gloss of less than 20, measured at least about 25, 诸. Gloss is very effective, the father's coarse abrasive particles (such as the extremely fine abrasive particles (such as 122813.doc -26- 1337915 J3000) can produce a gloss of 6 。. When the particle size between the mesh samples is the same, the adhesive is blended The material and the reinforced particles can be used to shape the effectiveness of the police. In addition, the roughness efficiency is defined as the average roughness (Ra) of the surface treated by the above method. If measured in micro-twist, grinding A particular embodiment of the article can exhibit a roughness effect of no greater than about 3.5, such as no greater than about 31 or its dad to no greater than about 2.6. In another example, the coarseness index and the removal index can be Based on the effectiveness of the abrasive article on the acrylic resin sheet. Connect the abrasive product to a pressure (iv) uuuhinis® M eccentric sander. Polish the product on 6 acrylic plates pre-polished with 3M 26〇L 15〇〇. The grinding time is 3 minutes ^ 30 seconds per plate. After 30 seconds, the weight loss of the acrylic resin sheet and the surface roughness Ra measured in micrometers are measured. The removal index is defined as 6 Cumulative weight loss and roughness of block acrylic plate The number is defined as the average roughness Ra of the first acrylic resin plate. In detail, the roughness index of the ground product may be not more than 6.0, such as not more than 5.0, not more than 4 〇 or even as measured in micro 吋. Not greater than 3. In another example, the measurement may be at least about 0.1' such as at least about 0.2, at least about 〇3, or even at least about 〇5, as measured in grams. Example 1 The mechanical properties of the layer formed by the polyoxo-based formulation were measured by mixing E]ast〇sH83003 LR50 liquid poly-stone part 6 and B (purchased from Wacker Silicone) with the formulation. The total weight is about 60 wi% of the sulphate granules (purchased from Nanko). Elastosil® 3003 I22813.doc -27· 1337915 LR5〇 is a two-part liquid containing oxygen, #includes about 33% by weight It is estimated that the cerium-containing premixed &amp; 氡 矽 矽 矽 。 。 。 。 。 。 。 。 。 。 。 。 。 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约 约Viscosity at a shear rate (DIN 53 019) of approximately 360,000 Cps and in the absence of abrasive particles In the case of curing, it has a tensile strength of about M6 Mpa and an elongation of 520% (DIN 53 5〇4 S1). The formulation is allowed to cure in a heated mold at 175 for 5 minutes under pressure. The cured formulation exhibited a tensile strength of about 7.76 MPa (1126 psi) and an elongation at break of about 137% (ASTM D 412). Additionally, the cured formulation exhibited a 100% modulus of about 7.22 MPa (1 048 psi) and 83 Shore A hardness. Example 2 Two backless ground samples were compared to 3M Trizact 443SA P3000. Sample 1 consisted of Elastosil® 3003 LR50 and 65 wte/ including Wacker® Silicone. The formulation of the WA800 alumina abrasive particles is formed and includes a pattern of structural pyramids having a square bottom with a side of 5 microns and a height of about 250 microns above the surface. Sample 1 was cured in a mold which was heated to about 350 T over a period of about 45 minutes and cooled to about 100 °F. Sample 2 was prepared in the manner described above by a formulation comprising Wlaser® Silicone's Elastosil® 3003 LR50 and 60% by weight of J800 cerium carbide abrasive particles.

To test the performance of the sample, the portion of the new painted cover was pre-polished with 3M 260L P 1500 to an average roughness (Ra) of between about 7.8 micrometers and about 9. micrometers. Use the sample! Or one of the sample 2 or comparison samples is polished for 1 minute. Table 1 shows the roughness performance and gloss performance of the sample. D I228I3.doc •28· 1337915 Table 1 ·Roughness and gloss efficacy sample 1 Sample 2 Comparison sample -3M Trizact Ρ30ΩΠ Roughness (micro-吋) 3.3 3.4 3.3 Gloss performance ( %) 28.9 26.1 13.5 For sample 1 'sample 2 or comparative sample, no defects were observed in the surface. Both the sample and the sample 2 exhibited similar roughness performance compared to the 3M Trizact P3000. However, Sample 1 and Sample 2 exhibited improved gloss performance about 100% greater than the comparative example. Example 3 Two non-backed abrasive samples were prepared using different enhanced cerium oxide loadings. Sample 3 was prepared in the manner described above by a formulation comprising Wlaser® Silicone's Elastosil® 3 003 LR50 and 60 wt% J800 tantalum carbide abrasive particles. Sample 3 contains about 13°/. The fuming cerium oxide. Sample 4 was prepared by mixing dmS-V31 vinyl-terminated polydimethyloxane, HMS-301 hydride crosslinker, and SIP 6829.2 catalyst (each from Geiest, inc, Morrisville, PA) with 10 pph Cabosil M5. Fuming cerium oxide (available from Cabot Corporation) was prepared to form a mixture. The mixture was then mixed with 6 wt% of J800 niobium carbide. Sample 4 contained about 4% of the fumed silica dioxide. Samples were tested on a portion coated with a Spies-Hecker varnish and pre-polished with 3M 260 L P1500 to a roughness in the range of 6.3 micrometers to 7.3 micrometers and compared to Trizact 443SA P3000 purchased from 3M. On the same area of the cover, the grinding time of each product was 1 minute. Table 2 illustrates the resulting roughness and gloss performance of the sample I22813.doc •29-1337915. Table 2. Roughness and Gloss Efficacy Sample 3 Sample 4 Roughness Efficacy 2.4 3.1 _ Gloss Efficacy 29.2 18.3 '''''' No defects were observed in the ground surface. Both Sample 3 and Sample 4 exhibited improved gloss performance compared to the comparative samples. However, Sample 3 with a larger concentration of sulphur dioxide enhancer exhibited a greater improvement in gloss performance and an improvement in the efficiency of the saccharide. Example 4 A backless ground sample was compared to that obtained from 3MiTrizact 443SA P3. Sample 5 was formed from a formulation comprising Wlaser® Silicone's Elastosil® 3003 LR50 and 60 wt% J800 tantalum carbide abrasive particles and including a pattern of structural pyramids with 45 pyramids per linear tantalum. Sample 5 was cured in a mold which was heated to about 35 Torr over a period of about 45 minutes and cooled to about 1 Torr. To test the performance of the sample, the portion of the new painted cover coated with Spies_Hecker varnish was pre-polished with 3M 260L P1500 to an average roughness (Ra) between about 7.8 micrometers and about 9.0 microDs. ^ Subsequently, Use Part 5 or a comparison sample to polish the parts for a few minutes. Table 3 shows the roughness performance and gloss performance of the samples. 122813.doc 1337915 Table 3 Sample 5 Trizact 443 SA P3000 Ra (u&quot;) 3.9 2.9 60 degree gloss (%) 24 14 Note Glossy matte matte Sample 5 exhibits a gloss performance that is higher than the gloss performance of the comparative product. Example 5 Two non-layered ground samples were compared to Trizact 443SA® 3000 purchased from 3Μ. Sample 6 and Sample 7 were formed from a formulation comprising Wlaser® Silicone's Elastosil® 3 003 LR50 and 60 wt% J800 carbonized carbide abrasive particles and including a pattern of structural pyramids with 45 ridges per linear enthalpy Cone. Sample 6 was formed by compression molding and sample 7 was formed by weaving and embossing. To test the performance of the sample, the portion of the new painted cover coated with Spies-Hecker varnish was pre-polished with 3M 260L P1500 to an average roughness (Ra) of between about 7.8 micro-injections and about 9.0 micro-twist. These portions were then polished using Sample 6 or Sample 7 or one of the comparative samples for 1 minute. Table 4 shows the crude sugar performance and gloss performance of the samples. Table 4 Sample 6 Sample 7 Trizact 443 SA P3000 Ra (υ&quot;) 4.6 4.5 3.3 60 degree gloss (%) 16 15 11 Both sample 6 and sample 7 exhibit improved gloss performance relative to the comparative sample. 0 122813.doc 31 1337915 Example 6 Two backless ground samples were compared to 3M Trizact 443SA P3000. Samples 8 and 9 were formed from a formulation comprising Wacker@ siHcone's Ela St〇sil® 3003 lR50 and 60 wt% of J8 tantalum carbide abrasive particles. Sample 8 has a surface comprising 90 pyramids per linear 且 and sample 9 has a pattern of 45 pyramids per linear 吋. Both samples were formed by compression molding. To test the efficacy of the sample, the portion of the new painted cover coated with Spies_Hecker varnish was pre-polished with 3M 260L P1 500 to an average roughness (Ra) of between about 7.8 microcubes and about 9.0 microtwist. Subsequently, the portions were polished using sample 8 or sample 9 or one of the comparative samples for 1 minute. Table 5 shows the roughness performance and gloss performance of the samples. Table 5 Sample 8 Sample 9 Trizact 443 S A P3000 Ra (u&quot;)__ 3.7 4~5 3.4 60 degree gloss (%) 21 16 11

Sample 8 exhibited improved gloss performance relative to sample 9 and comparative samples. Example 7 Two backless ground samples were compared to Trizact 443SA P3000 from 31VI. Sample 10, sample Π and sample 1 2 are from Elastosil® 3003 LR50 and 60 wt°/ including Wacker® Silicone. The J800 carbonized stone Xiyan abrasive composition is formed. Sample 1 〇 has a pattern of 90 pyramids per linear ,, sample 11 has a pattern of 45 pyramids per linear ,, and a sample; [2 has a random triple helix pattern of 122813.doc -32 - 1337915 per 35 lines. To test the performance of the sample, the portion of the new painted cover coated with Spies-Hecker varnish was pre-polished with 3M 260L P1 500 to an average roughness (Ra) of between about 7.8 microcubes and about 9.0 microcubits. Subsequently, the parts are polished using sample 10, sample U or sample 12 or one of the comparative samples for a period of 1 cent. Table 6 shows the roughness performance and gloss performance of the samples. Table 6 Sample 10 Sample 11 Sample 12 Trizact 443S A P3000 Ra (u&quot;) 3.8 3.8 3.2 3.1 60 degree gloss (%) 18 17 26 14 The release is shiny and uniform, shiny and uniform, but the model is dull. And the same as this 12 shows improved gloss performance relative to sample 10 and sample 11 and comparative samples. Example 8 Two backless ground samples were compared to 3M Trizact 443SA P3000. Sample 13 and Sample 14 were formed from a formulation comprising Wacker® Silicone's Elastosil® 3003 LR50 and 60 wt% J800 tantalum carbide abrasive particles. Sample 13 has a surface comprising 45 pyramids per linear 且 and sample 14 has a pattern of 125 tiles per linear 吋. To test the efficacy of the sample, the portion of the new painted cover coated with Spies-Hecker varnish was pre-polished with 3M 260 L P1 500 to an average roughness (Ra) of between about 7-8 microcubits and about 9.0 microtwist. Subsequently, the portions are polished using sample 13 or sample 丨4 or one of the comparative samples for 1 minute. Table 7 shows the coarseness and gloss performance of the samples. 122813.doc -33- Table 7 Sample 13 Sample 14 Trizact 443 SA P3000 Ra iu&quot;) 2.6 2,5 3.2 60 degree gloss (%) 35 36 11.7 Note Glossy matte matte surface 1337915 Sample 13 and sample 14 show The improved gloss is comparable to the comparative sample. Example 9 Two backless ground samples were compared to 3M Trizact 443SA P3000. Sample 15 was formed from a formulation comprising Wlaser® Silicone's Elastosil® 3003 LR50 and 60 wt% J800 tantalum carbide abrasive particles, each having 45 pyramids. Sample 16 was formed from a formulation comprising Lotryl 29-Ma-03 and 75 wt% of J800 cerium carbide abrasive particles, with 45 pyramids per linear enthalpy. To test the efficacy of the sample, the portion of the new painted cover coated with Spies-Hecker varnish was pre-polished with 3M 260 L P1500 to an average roughness (Ra) of between about 7.8 micro-twist and about 9.0 micro-twist. Subsequently, the portions are sanded using sample 15 or sample 16 or one of the comparative samples for 1 minute. Table 8 shows the coarse roundness performance and gloss performance of the sample. Table 8 Sample 15 Sample 16 Trizact 443 SA P3000 Ra (u&quot;) 2.7 3.7 2.8 60 degree gloss (%) 40 20 24 Note Glossy modeled matte matte 1228l3.doc -34 · 1337915 Sample 1 5 shows relative to the sample 16 and compare the improved gloss performance of the sample. Example 10 A backless ground sample was prepared and tested to determine the removal index and the roughness index as defined above. The samples, designated LSR2, were made from polyoxygenated oil (100 g DMS-V31 vinyl terminated polyfluorene with 35 g HMS_3〇1 hydride crosslinker and suitable for iPt catalyst). The liquid is mixed with various types of fumed silica dioxide and J800 abrasive particles and cured to form a backless abrasive article. Table 9 illustrates the sample removal index and roughness index. Table 9

Table 9 generally shows that the increase in filler particle loading reduces the roughness index and has little effect on the removal index. Example 11 A backless ground sample was prepared and tested to determine the removal index and roughness index as defined above. The samples were prepared from a variety of thermoplastic and thermoset materials and abrasive granules of different s: and types. The table indicates the removal index and roughness index of the ground product formed from various formulations. 122813.doc -35· 1337915

Table ί Resin Abrasive Grain Wt% Abrasive Grain 1 Abrasive Grain 2 Removal Index Thickness Index Type Abrasive Type Abrasive Elastollan 1180A 60 SiC J800 0.11 2.6 Elastollan 1180A 75 SiC J800 Elvacite 4044 60 SiC J800 0.49 4.0 Evatane 24-03 60 SiC J800 0.00 Ενatane 40-55 60 SiC J800 0.00 Evatane 40-55 70 SiC J800 0.03 2.6 Evatane 40-55 75 SiC J800 0.01 2.3 Evatane 40-55 80 SiC J400 SiC J3000 0.54 5.2 Evatane 40-55 80 SiC J600 Alum WA6000 0.29 2.9 Lotader 3430 60 SiC J800 0.13 1.9 Lotader 3430 75 SiC J800 0.25 2.7 Lotader 3430 80 SiC J800 XX Lotader AX 8900 60 SiC J800 0.21 1.7 Lotader AX 8900 75 SiC J800 0.19 1.8 Lotryl 15-MA-03 60 SiC J800 0.09 2.0 Lotryl 29 -MA-03 60 SiC J800 0.02 2.0 Lotryl 29-MA-03 70 SiC J800 0.22 2.2 Lotryl 29-MA-03 75 SiC J800 0.37 2.5 Lotryl 29-MA-03 80 SiC J400 SiC J3000 0.42 5.0 Lotryl 29-MA-03 84 SiC J600 Alum WA6000 0.49 3.5 Lotryl 29-MA-03 80 SiC J600 Alum WA6000 0.22 3.0 Lotryl 29-MA-03 80 SiC J600 Alum WA60 00 0.28 3.5 Lotryl 29-MA-03 80 SiC J600 0.36 3.6 Lotryl 30-BA-02 60 SiC J800 0.13 2.1 Orevac 18211 60 SiC J800 0.09 2.0 Pebax 2533 60 SiC J800 0.04 3.3 Pebax 2533 75 SiC J800 0.25 3.2 PLA 2002D+Tegomer H-Si 6440 65 SiC J800 0.49 4.5 Riteflex 430 60 SiC J800 0.23 2.3 Riteflex 430 75 SiC J800 0.29 3.4 Elastosil 3003 LR50 60 SiC J800 0.63 2.0 The above subject matter is to be regarded as illustrative and not limiting, and the attached application All modifications, additions, and other embodiments are intended to be included within the scope of the invention. Therefore, to the extent permitted by law, the scope of the invention is determined by the following broad description of the scope of the claims and the equivalents thereof, which are not limited by the foregoing detailed description or Limitations [Simplified Schematic Description] FIG. 1 includes an illustration of a cross-sectional view of an exemplary structured abrasive article. FIG. 2 and FIG. 3 include an exemplary surface feature layer in the form of a surface protrusion pattern of an armor in an exemplary structured abrasive article. Description. Figures 4 and 5 include illustrations of exemplary cross-sections of surface features of an exemplary structured abrasive object. The figure includes a flow chart illustrating an exemplary method for forming an exemplary structured abrasive article. Figure 7 includes an illustration of a cross-sectional view of an exemplary structured abrasive article.

[Main component symbol description] D 100 abrasive article 102 abrasive layer 104 adhesive layer 106 fastener plate 108 protruding structure 200 pattern 202 abrasive layer 204 abrasive structure 300 pattern 302 abrasive layer 304 abrasive structure 400 abrasive structure 402 width 122813.doc -37- 1337915

404 contact area 406 vertical height 408 horizontal plane 500 cross section 502 surface 504 contact surface 702 abrasive layer 704 adhesive layer 708 surface characteristics

122813.doc -38

Claims (1)

1337915 Patent Application No. 096125711 - Chinese Patent Application Substitution (June 99) X. Patent Application Range: 1. A non-backed abrasive article comprising: V, having a primary surface and a second major surface a layer, the abrasive layer is a first-main surface boundary of the self-supporting building 4, the polishing layer is formed by a polymer formulation and abrasive particles; an adhesive layer directly contacting the second major surface, the adhesive layer comprising Adhesive; and a fastener layer that is in direct contact with the adhesive layer. 2. The backless ground article of claim i, wherein the polymer formulation comprises a thermoplastic polymer. Wherein the polymer formulation comprises wherein the polymer formulation comprises the polymer formulation wherein the polyoxyxene resin comprises a dilute elastomer as claimed in claim 3. 4. The backless abrasive article of claim 1 comprising a polyoxyn resin. 5. The uncoated abrasive article of claim 1, having an elongation at break of at least about 50%. 6. The non-backed abrasive article of claim 4, formed of a liquid polyoxyn resin. 7. The backless abrasive article of claim 1 wherein the reinforcing particles are included.埯 包 8.:: The backless ground article of claim 7, wherein the buildup is at least about 3 wt%. 3 wherein the abrasive particles comprise carbon 9. The backless abrasive article fossil as recited in claim 1 122813-990705.doc 1337915 ίο11 12 13. 14. 15. 16. 17. 18. 19.无The backless layer of abrasive article is about 30 wt ° /. The abrasive particles. For example, the non-backed abrasive article of Item 1 is about 100% elongation at break. For example, the thickness of the backless layer of the object is about 5 mils. The backless abrasive article of claim 12 is 350 mils. The backless abrasive article pattern of claim 1. If there is no back-grinding object of claim 1, the inclined surface is raised. Wherein the polishing layer comprises at least wherein the polishing layer has at least wherein the polishing layer has a size that is not greater than the thickness of the group of protrusions, wherein the group of protrusions are arranged in a state in which the group of protrusions are laterally inclined, comprising: An abrasive layer of the side surface and the second major side defining the first main side defining a protrusion protruding from the first surface of the abrasive article; the polishing layer being formed by the polymer formulation and the abrasive rough; and: directly and the second The adhesive layer of the main side contact, the squat layer comprising an adhesive, the adhesive layer defining a second outer surface of the abrasive article. The abrasive article of claim 16, wherein the polymer formulation has a minimum of about 50°/. Elongation at break. The abrasive article of claim 16 wherein the polymer formulation comprises a thermoplastic polymer. The abrasive article of claim 4, wherein the polymer formulation comprises a polyoxin. 122813-990705.doc 20. 20. The abrasive article of claim 19, formed of a silicone resin. The elongation at break of the abrasive article of item 16. The thickness of the 5 mil ear as claimed in item 16. The abrasive article of claim 16, such as the abrasive article of claim 16, has a raised surface. Wherein the polyoxynene resin is polymerized from a liquid 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. wherein the abrasive layer has at least about 1% 0% 'where the abrasive layer has no greater than about The set of protrusions are arranged in a pattern. The 5H group of dogs is a table for tilting the side wall - an abrasive article comprising: a self-supporting polishing layer having a column of protrusions defining a major surface of the polishing layer, the polishing layer being polymerized and dispersed in the polymerization In the presence of abrasive particles, the abrasive layer has a thickness of no greater than about 500 mils and the nodal protrusions have a thickness of no greater than 20 mils; and X wherein the abrasive article has no backing layer. The abrasive article of claim 25, wherein the thickness is no greater than about 35 mils. The abrasive article of claim 25, further comprising an adhesive layer in direct contact with the abrasive layer. The abrasive article of claim 27, wherein the adhesive layer forms a pressure sensitive surface configured to attach the abrasive article to a grinder. The abrasive article of claim 27, further comprising a fastener layer in direct contact with the point layer. A method of repairing an optical medium, the method comprising: 1228I3-990705.doc 1337915 receiving an optical medium used; grinding the used optical medium with an abrasive article, the backless abrasive article comprising a first major surface and a second The primary surface self-supports the abrasive layer formed from a polymer and abrasive particles dispersed in the polymer, the self-supporting abrasive layer having a thickness of no greater than about 5 mils, the backless abrasive article Further comprising an adhesive layer directly in contact with the first major surface of the abrasive layer, the adhesive layer comprising an adhesive layer forming an outer surface of the abrasive article, the first major surface defining a set of protrusions; For subsequent use. 31. The method of claim 30, wherein the backless abrasive article comprises an adhesive layer that is in direct contact with the second major surface of the delta-grinding layer. 32. The method of claim 31, wherein the backless abrasive article comprises a fastener layer in direct contact with the adhesive layer. 33. An abrasive article formed from a cured formulation comprising a liquid polyoxyxene rubber, ceria reinforced particles, and abrasive particles. 34. The abrasive article of claim 33, wherein the ceria reinforced particles comprise fumed silica dioxide. 35. The abrasive article of claim 33, wherein the formulation comprises at least about 3 wt. The cerium oxide enhances the particles. 3. The abrasive article of claim 35, wherein the formulation comprises at least about 1% by weight of the cerium oxide enhancing particles. 37. The abrasive article of claim 33, wherein the abrasive particles are selected from the group consisting of nitrides, carbides, oxides, or blends thereof. </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; 39. The abrasive article of claim 38, wherein the carbide is selected from the group consisting of carbonized smear, sinus, and carbonized. 4. The abrasive article of claim 39, wherein the carbide comprises carbon stone. 41. The abrasive article of claim 37, wherein the abrasive particles comprise a nitride. 42. The abrasive article of claim 41, wherein the nitride is selected from the group consisting of cubic boron nitride and tantalum nitride. 43. The abrasive article of claim 37, wherein the abrasive particles comprise an oxide. 44. The abrasive article of claim 43, wherein the oxide is selected from the group consisting of: dioxide dioxide, oxidized, oxidized, oxidized/oxidized, cerium oxide, oxidized, Rolling titanium oxide tin oxide, iron oxide and chromium oxide. 45. The abrasive article of claim 33, wherein the abrasive particles are selected from the group consisting of: cerium oxide, cerium &amp;&gt;, emulsified aluminum (melting or sintering), cerium oxide, zirconia /alumina, carbon 彳b &gt;, anaerobic garnet, diamond, cubic boron nitride, tantalum nitride, dioxide, 备 一 emulsified titanium 'titanium diboride, carbonization shed, tin oxide, carbonization Town, foundation # &quot; ^ titanium, iron oxide, chromium oxide, vermiculite, silicon carbide and any combination thereof. 46. The abrasive article of claim 33, wherein the formulation comprises at least about 30% by weight of the abrasive particles. 47. The abrasive particles of claim 44, wherein the abrasive article is wt%. Wherein the s-containing formulation comprises at least about 45. 48. The abrasive article of claim 47, wherein the scorpion. The furnish formulation comprises at least about 5 5 wt% of the abrasive particles. 49. The abrasive article of claim 33, wherein the liquid polyoxo rubber is formed from two 122813-990705.doc 1337915 partially polyoxyxene rubber, wherein the portion comprises a crosslinking agent. 50. The ground material of claim 49, wherein the crosslinking agent has a polyoxynium primary bond. The abrasive article of claim 33, wherein the cured formulation has an elongation at break of at least about 100%. The abrasive article of claim 5, wherein the elongation at break is at least about 120%. The abrasive article of claim 52, wherein the elongation at break is at least about 135%. Wherein the curing formulation has a Shore D hardness of no greater than wherein the curing formulation has no greater than the abrasive article having a tensile modulus of no greater than about 76, such as claim 33. The abrasive article of claim 33, having a tensile modulus of about 8.0 MPa. The abrasive article MPa of claim 5 5 is used. The abrasive article of claim 33, wherein the cured formulation has a tensile strength of at least about 7.0 MPa. The abrasive article of claim 33, wherein the tensile strength is at least about 7.5 MPa, such as the abrasive article of claim 33, wherein the abrasive article is in the form of a lapping plate and wherein the abrasive article has no backing. The abrasive article of claim 33, wherein the abrasive article is in the form of a plate having a major surface, wherein the major surface has a combination of surface protrusions. The abrasive article of claim 60, wherein the combination of surface protrusions is arranged in a pattern of J22813-990705.doc I337915. 62. The surface of the abrasive article of claim 61 is raised. 63. The surface of the abrasive article of claim 61 is raised. Wherein the surface protrusions such as "Hai" are inclined to the side walls, wherein the surface protrusions are vertical as the side of the object of claim 33, and the step further comprises an adhesive layer β 65. The abrasive article of claim 33, which further comprises a layer adapted to be joined in a hook and loop system. 66. The abrasive article of claim 33, wherein the cured formulation forms a layer having a thickness of no greater than about 500 mils. 67' The abrasive article of claim 66, wherein the thickness is no greater than about 35 mils. 68. A method comprising: blending a liquid polyoxyxene rubber, cerium oxide enhancing particles, and abrasive particles to form a formulation; forming a surface feature layer from the formulation: and curing the formulation. 69. The method of claim 68, wherein curing the formulation comprises thermally curing the formulation. 70. The method of claim 68, wherein curing the formulation comprises curing the formulation using actinic radiation. The method of claim 68, wherein forming the surface feature layer comprises forming a set of surface structures in the surface feature layer, the surface structures being configured to increase surface area with wear. 122813-990705.doc 1337915 The method of the month-month length item 68 wherein forming the surface layer comprises forming a layer having a thickness of no greater than about 500 mils. 73. An abrasive article comprising: - a layer comprising a poly 7 oxygen # mixture and abrasive particles, the layer having an elongation of at least about 100%. 74. An abrasive article comprising: - a surface feature layer Having a first-outer surface configured to increase surface area with wear, the surface feature layer comprising a poly-xylene adhesive and abrasive particles, the surface feature layer having a thickness of no greater than about 1 mil, The surface feature layer has a thickness of no more than about (10) mils. The surface layer is self-supporting; and the adhesive layer is in contact with the surface feature layer of the first outer surface, and the adhesive layer forms the a second outer surface of the article, and wherein the abrasive article has no backing layer. 75. An abrasive article comprising: a layer having a surface protrusion, the layer comprising an oxygen binder and abrasive particles; and wherein the abrasive article has at least A gloss performance of about 2 inches. 122813-990705.doc